For small for gestational age with negative catch-up progress, GH therapy can be indicated after exclusion of other causes
https://jaidenkwrv524.scriblorax.com/posts/hgh-in-teens-safety-benefits-and-considerations-for-parents
For small for gestational age with bad capture-up increase, GH treatment may well be indicated after exclusion of other causes, with shut tracking of enlargement velocity and metabolic parameters.